Beam splitting polarizers split the incoming unpolarized beam into two polarized beams, or more commonly into one polarized beam and another somewhat polarized

Beam splitting polarizers split the incoming unpolarized beam into two polarized beams, or more commonly into one polarized beam and another somewhat polarized beam. By stacking many of them you can obtain a polarizer that loses less than 50% of the light. http://en.wikipedia.org/wiki/Polarizer#Beam-splitting_polarizers http://en.wikipedia.org/wiki/Polarizer#Beam-splitting_polari...